Convolutional Neural Network GDPR Gaussian mixture models K-means cluster NILM NILM datasets Non-Intrusive Load Monitoring (NILM) Non-intrusive Load Monitoring Poisson distribution Shapley Value Technology: general issues V-I trajectory activation current ambient influences appliance load signatures appliance recognition attention mechanism convolutional neural network data annotation data privacy data-driven approaches deep learning deep neural network deep neural networks device classification accuracy distance similarity matrix electric load simulation electric vehicle electrical energy electricity theft detection